Method of comprehensively utilizing serpentine

A serpentine and serpentine mine technology, applied in the direction of process efficiency improvement, silicon oxide, etc., can solve the problems of polluting the environment, lack of comprehensive serpentine refining and processing, and inability to guarantee stable income

Inactive Publication Date: 2008-08-06
刘湘霖 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no domestic industry for comprehensive refining and processing of serpentine
The main reason is that although serpentine contains a relatively large amount of magnesium and silicon, these technologies are only for the individual development and utilization of these substances, and cannot guarantee stable returns.
Moreover, in the process of processing, a slight omission may cause serious three wastes, greatly destroy resources and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Example 1: Crush and grind the serpentine ore to 80-200 mesh, use a strong magnetic field above 4500 Oersted to magnetize out the magnetic substances to obtain magnet powder, and obtain iron ore powder that meets industrial requirements after simple processing.

[0024] Screen out 400g of ore powder from the magnetized ore powder, add it to 1500g of acid leaching mother liquor (new acid passes through the leaching solution of ore leaching powder once), and do the first acid leaching (at the beginning of the process, the concentration is 17%) The sulfuric acid solution is used as the pickling solution for the first pickling). At this time, acid leaching is controlled within the temperature range of 80°C-115°C, stirred at normal pressure for 2 hours, and filtered to separate the rich magnesium sulfate solution with little acid content, which is the completion solution of acid leaching. The filter residue is cleaned of magnesium salt for the second time to become silicon p...

example 2

[0028] Example 2: Crush and grind the serpentine ore to 80-200 mesh, and use a strong magnetic field above 4500 Oersted to magnetize out the magnetic substances in it to obtain coarse magnet powder. Coarse magnet powder is subjected to re-wet magnetic separation to obtain iron ore powder that meets industrial requirements.

[0029] Screen out 400g of ore powder from the magnetized ore powder, and add it to 1500g of acid leaching mother liquor (in which the new acid has passed through the leaching of the ore powder once) for the first acid leaching. At this time, acid leaching is controlled within the temperature range of 80°C-135°C, stirred at normal pressure for 2 hours, and filtered to separate the rich magnesium sulfate solution with little acid content, which is the completion solution of acid leaching. The filter residue is cleaned of magnesium salt for the second time to become silicon powder for primary immersion, which is ready for the second acid leaching. Slowly add 4...

example 3

[0033] Example 3: When other conditions are the same, if 20% hydrochloric acid is used as pickling solution, the leaching rate of magnesium can reach 95%-98%. The yield of silicon powder can reach 98%. The purity of the intermediate product magnesium chloride and magnesium oxide is still 97%-98%. Except that the operating environment of acid leaching is worse than that of sulfuric acid, and the environmental protection workload is heavy, the other conditions are basically the same, so they will not be repeated here.

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Abstract

The invention relates to a method for comprehensively utilizing serendipities, which comprises: magnetically separating the serpentinites in a strong magnetic field, obtaining amorphous silica powder which contains silicon dioxide more than 90% through filtering acid dipping solution, dissolving the amorphous silica powder through using caustic soda under high temperature, which is used for manufacturing soluble glass with medium high modulus or taken as raw materials for producing white carbon black, then, mixing sulphuric acid and hydrochloric acid or nitric acid or mixing the sulphuric acid, the hydrochloric acid and nitric acid, adding acid dipping additive to carry out compound alternative and circulating acid dipping for ore powder which is magnetically separated and processed, fractionally depositing, filtering, and removing impurity for magnesium sulfate solution which is filtered through the acid dipping and contains the impurity, through adjusting the pH value, obtaining inorganic industrial dyes which mainly contain iron oxide yellow, ferric hydroxide and aluminum hydroxide, enriching the nickel, which is convenient for abstracting the nickel from the serpentinites, finally obtaining high purity magnesium oxide through refining refined magnesium sulfate solution whose impurity is removed after ammonium hydrogen carbonate and ammonial solution or sodium sulfide is used to deposit, and also obtaining ammonium sulfate or sodium sulfate which contains magnesium and calcium after liquid which is filtered is evaporated.

Description

technical field [0001] The invention belongs to the technical field of ore and rock refining chemistry and chemical engineering, and in particular relates to a method for comprehensively utilizing serpentine. Background technique [0002] Serpentine is a layered silicate mineral compounded by silicon-oxygen octahedra, and its chemical formula is: 3MgO·2SiO 2 2H 2 O. Serpentine with MgO and SiO 2 It is the main available ingredient, and contains about 8% iron oxide, about 3‰ nickel, a certain amount of crystal water (about 12%), and a small amount of manganese, chromium, aluminum, calcium and other elements. [0003] There is a huge reserve of serpentine in my country, but the utilization of serpentine is limited to the following aspects: as jade raw material for general building decoration materials; as refractory material and chemical fertilizer raw material; as ceramic and metallurgical flux Raw materials and other aspects or used as filling stones, its added value is v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/06C22B23/00C22B26/22C01B33/113
CPCY02P10/20
Inventor 刘湘霖张卫军徐文嘉高中洪刘花子
Owner 刘湘霖
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